DOI: 10.1118/1.598470. Multi‐slice helical CT: Scan and reconstruction

Multi‐slice helical CT: Scan and reconstruction

10.1118/1.598470

Crossref journal-article

Wiley

Medical Physics (311)

Abstract

The multi‐slice CT scanner refers to a special CT system equipped with a multiple‐row detector array to simultaneously collect data at different slice locations. The multi‐slice CT scanner has the capability of rapidly scanning large longitudinal (z) volume with high z‐axis resolution. It also presents new challenges and new characteristics. In this paper, we study the scan and reconstruction principles of the multi‐slice helical CT in general and the 4‐slice helical CT in particular. The multi‐slice helical computed tomography consists of the following three key components: the preferred helical pitches for efficient z sampling in data collection and better artifact control; the new helical interpolation algorithms to correct for fast simultaneous patient translation; and the z‐filtering reconstruction for providing multiple tradeoffs of the slice thickness, image noise and artifacts to suit for different application requirements. The concept of the preferred helical pitch is discussed with a newly proposed z sampling analysis. New helical reconstruction algorithms and z‐filtering reconstruction are developed for multi‐slice CT in general. Furthermore, the theoretical models of slice profile and image noise are established for multi‐slice helical CT. For 4‐slice helical CT in particular, preferred helical pitches are discussed. Special reconstruction algorithms are developed. Slice profiles, image noises, and artifacts of 4‐slice helical CT are studied and compared with single slice helical CT. The results show that the slice profile, image artifacts, and noise exhibit performance peaks or valleys at certain helical pitches in the multi‐slice CT, whereas in the single‐slice CT the image noise remains unchanged and the slice profile and image artifacts steadily deteriorate with helical pitch. The study indicates that the 4‐slice helical CT can provide equivalent image quality at 2 to 3 times the volume coverage speed of the single slice helical CT.

Bibliography

Hu, H. (1999). Multiâslice helical CT: Scan and reconstruction. Medical Physics, 26(1), 5â18. Portico.

Authors 1

Hui Hu (first)

References 24 Referenced 392

I. Mori “Computerized tomographic apparatus utilizing a radiation source ” U.S. Patent No. 4 630 202 1986.
H. Nishimura and O. Miyazaki “CT system for spirally scanning subject on a movable bed synchronized to x‐ray tube revolution ” U.S. Patent No. 4 789 929 1988.
10.1118/1.596464
10.1148/radiology.176.1.2353088
10.1148/radiology.185.1.1523331
10.1118/1.597706
10.1148/radiology.185.2.1410356
10.1148/radiographics.14.4.7938775
J. S. Arenson R. Levinson and D. Freundlich “Dual slice scanner ” U.S. Patent No. 5 228 069 1993.
10.1118/1.597705
L. Feldkamp L. Davis and J. Kress “Practical cone‐beam algorithm ” J. Opt. Soc. Am. 612–619 (1984). (10.1364/JOSAA.1.000612)
10.1002/sca.4950180807
{'key': 'e_1_2_1_14_1', 'article-title': 'Helical‐scan computed tomography using cone‐beam projections,” in', 'author': 'Kudo H.', 'year': '1991', 'journal-title': 'IEEE NSS/MIC'} / IEEE NSS/MIC / Helical‐scan computed tomography using cone‐beam projections,” in by Kudo H. (1991)
10.1109/42.241876
S. Schaller T. Flohr and P. Steffen “A new efficient Fourier‐reconstruction method for approximate image reconstruction in spiral cone‐beam CT at small cone‐angles. ” in SPIE International Symposium on Medical Imaging 1997. (10.1117/12.273987)
H. Hu and N. Pelc “Systems methods and apparatus for reconstructing images in a CT system implementing a helical scan ” U.S. Patent No. 5 559 847 1996.
H. Hu “Image reconstruction for a CT system implementing a four fan beam helical scan ” U.S. Patent No. 5 541 970 1996.
10.1118/1.598409
H. Hu “Method and apparatus for multislice helical image reconstruction in a computer tomography system ” U.S. Patent No. 5 606 585 1997.
{'key': 'e_1_2_1_21_1', 'first-page': '189', 'article-title': 'Helical reconstruction algorithm with user‐selectable section profile,” in', 'author': 'Hu H.', 'year': '1996', 'journal-title': 'RSNA'} / RSNA / Helical reconstruction algorithm with user‐selectable section profile,” in by Hu H. (1996)
10.1118/1.596607
10.1118/1.596950
10.1118/1.597306
10.1118/1.597774

Dates

Type	When
Created	23 years ago (July 26, 2002, 10:01 a.m.)
Deposited	1 year, 11 months ago (Sept. 16, 2023, 4:22 a.m.)
Indexed	6 hours, 26 minutes ago (Aug. 23, 2025, 12:58 a.m.)
Issued	26 years, 7 months ago (Jan. 1, 1999)
Published	26 years, 7 months ago (Jan. 1, 1999)
Published Online	26 years, 7 months ago (Jan. 5, 1999)
Published Print	26 years, 7 months ago (Jan. 1, 1999)

Funders 0

None

BibTeX

@article{Hu_1999, title={Multi‐slice helical CT: Scan and reconstruction}, volume={26}, ISSN={2473-4209}, url={http://dx.doi.org/10.1118/1.598470}, DOI={10.1118/1.598470}, number={1}, journal={Medical Physics}, publisher={Wiley}, author={Hu, Hui}, year={1999}, month=jan, pages={5–18} }

JSON

{
  "indexed": {
    "date-parts": [
      [
        2025,
        8,
        23
      ]
    ],
    "date-time": "2025-08-23T04:58:55Z",
    "timestamp": 1755925135988
  },
  "reference-count": 24,
  "publisher": "Wiley",
  "issue": "1",
  "license": [
    {
      "start": {
        "date-parts": [
          [
            1999,
            1,
            5
          ]
        ],
        "date-time": "1999-01-05T00:00:00Z",
        "timestamp": 915494400000
      },
      "content-version": "vor",
      "delay-in-days": 4,
      "URL": "http://onlinelibrary.wiley.com/termsAndConditions#vor"
    }
  ],
  "content-domain": {
    "domain": [],
    "crossmark-restriction": false
  },
  "published-print": {
    "date-parts": [
      [
        1999,
        1
      ]
    ]
  },
  "abstract": "<jats:p>The multi\u2010slice CT scanner refers to a special CT system equipped with a multiple\u2010row detector array to simultaneously collect data at different slice locations. The multi\u2010slice CT scanner has the capability of rapidly scanning large longitudinal (<jats:italic>z</jats:italic>) volume with high <jats:italic>z</jats:italic>\u2010axis resolution. It also presents new challenges and new characteristics. In this paper, we study the scan and reconstruction principles of the multi\u2010slice helical CT in general and the 4\u2010slice helical CT in particular. The multi\u2010slice helical computed tomography consists of the following three key components: the preferred helical pitches for efficient <jats:italic>z</jats:italic> sampling in data collection and better artifact control; the new helical interpolation algorithms to correct for fast simultaneous patient translation; and the <jats:italic>z</jats:italic>\u2010filtering reconstruction for providing multiple tradeoffs of the slice thickness, image noise and artifacts to suit for different application requirements. The concept of the preferred helical pitch is discussed with a newly proposed <jats:italic>z</jats:italic> sampling analysis. New helical reconstruction algorithms and <jats:italic>z</jats:italic>\u2010filtering reconstruction are developed for multi\u2010slice CT in general. Furthermore, the theoretical models of slice profile and image noise are established for multi\u2010slice helical CT. For 4\u2010slice helical CT in particular, preferred helical pitches are discussed. Special reconstruction algorithms are developed. Slice profiles, image noises, and artifacts of 4\u2010slice helical CT are studied and compared with single slice helical CT. The results show that the slice profile, image artifacts, and noise exhibit performance peaks or valleys at certain helical pitches in the multi\u2010slice CT, whereas in the single\u2010slice CT the image noise remains unchanged and the slice profile and image artifacts steadily deteriorate with helical pitch. The study indicates that the 4\u2010slice helical CT can provide equivalent image quality at 2 to 3 times the volume coverage speed of the single slice helical CT.</jats:p>",
  "DOI": "10.1118/1.598470",
  "type": "journal-article",
  "created": {
    "date-parts": [
      [
        2002,
        7,
        26
      ]
    ],
    "date-time": "2002-07-26T14:01:44Z",
    "timestamp": 1027692104000
  },
  "page": "5-18",
  "source": "Crossref",
  "is-referenced-by-count": 392,
  "title": "Multi\u2010slice helical CT: Scan and reconstruction",
  "prefix": "10.1002",
  "volume": "26",
  "author": [
    {
      "given": "Hui",
      "family": "Hu",
      "sequence": "first",
      "affiliation": []
    }
  ],
  "member": "311",
  "published-online": {
    "date-parts": [
      [
        1999,
        1,
        5
      ]
    ]
  },
  "reference": [
    {
      "key": "e_1_2_1_2_1",
      "unstructured": "I. Mori \u201cComputerized tomographic apparatus utilizing a radiation source \u201d U.S. Patent No. 4 630 202 1986."
    },
    {
      "key": "e_1_2_1_3_1",
      "unstructured": "H. Nishimura and O. Miyazaki \u201cCT system for spirally scanning subject on a movable bed synchronized to x\u2010ray tube revolution \u201d U.S. Patent No. 4 789 929 1988."
    },
    {
      "key": "e_1_2_1_4_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1118/1.596464"
    },
    {
      "key": "e_1_2_1_5_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1148/radiology.176.1.2353088"
    },
    {
      "key": "e_1_2_1_6_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1148/radiology.185.1.1523331"
    },
    {
      "key": "e_1_2_1_7_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1118/1.597706"
    },
    {
      "key": "e_1_2_1_8_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1148/radiology.185.2.1410356"
    },
    {
      "key": "e_1_2_1_9_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1148/radiographics.14.4.7938775"
    },
    {
      "key": "e_1_2_1_10_1",
      "unstructured": "J. S. Arenson R. Levinson and D. Freundlich \u201cDual slice scanner \u201d U.S. Patent No. 5 228 069 1993."
    },
    {
      "key": "e_1_2_1_11_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1118/1.597705"
    },
    {
      "key": "e_1_2_1_12_1",
      "doi-asserted-by": "crossref",
      "unstructured": "L. Feldkamp L. Davis and J. Kress \u201cPractical cone\u2010beam algorithm \u201d J. Opt. Soc. Am. 612\u2013619 (1984).",
      "DOI": "10.1364/JOSAA.1.000612"
    },
    {
      "key": "e_1_2_1_13_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1002/sca.4950180807"
    },
    {
      "key": "e_1_2_1_14_1",
      "article-title": "Helical\u2010scan computed tomography using cone\u2010beam projections,\u201d in",
      "author": "Kudo H.",
      "year": "1991",
      "journal-title": "IEEE NSS/MIC"
    },
    {
      "key": "e_1_2_1_15_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1109/42.241876"
    },
    {
      "key": "e_1_2_1_16_1",
      "doi-asserted-by": "crossref",
      "unstructured": "S. Schaller T. Flohr and P. Steffen \u201cA new efficient Fourier\u2010reconstruction method for approximate image reconstruction in spiral cone\u2010beam CT at small cone\u2010angles. \u201d in SPIE International Symposium on Medical Imaging 1997.",
      "DOI": "10.1117/12.273987"
    },
    {
      "key": "e_1_2_1_17_1",
      "unstructured": "H. Hu and N. Pelc \u201cSystems methods and apparatus for reconstructing images in a CT system implementing a helical scan \u201d U.S. Patent No. 5 559 847 1996."
    },
    {
      "key": "e_1_2_1_18_1",
      "unstructured": "H. Hu \u201cImage reconstruction for a CT system implementing a four fan beam helical scan \u201d U.S. Patent No. 5 541 970 1996."
    },
    {
      "key": "e_1_2_1_19_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1118/1.598409"
    },
    {
      "key": "e_1_2_1_20_1",
      "unstructured": "H. Hu \u201cMethod and apparatus for multislice helical image reconstruction in a computer tomography system \u201d U.S. Patent No. 5 606 585 1997."
    },
    {
      "key": "e_1_2_1_21_1",
      "first-page": "189",
      "article-title": "Helical reconstruction algorithm with user\u2010selectable section profile,\u201d in",
      "author": "Hu H.",
      "year": "1996",
      "journal-title": "RSNA"
    },
    {
      "key": "e_1_2_1_22_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1118/1.596607"
    },
    {
      "key": "e_1_2_1_23_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1118/1.596950"
    },
    {
      "key": "e_1_2_1_24_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1118/1.597306"
    },
    {
      "key": "e_1_2_1_25_1",
      "doi-asserted-by": "publisher",
      "DOI": "10.1118/1.597774"
    }
  ],
  "container-title": "Medical Physics",
  "original-title": [],
  "language": "en",
  "link": [
    {
      "URL": "https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1118%2F1.598470",
      "content-type": "application/pdf",
      "content-version": "vor",
      "intended-application": "text-mining"
    },
    {
      "URL": "https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1118%2F1.598470",
      "content-type": "unspecified",
      "content-version": "vor",
      "intended-application": "text-mining"
    },
    {
      "URL": "https://aapm.onlinelibrary.wiley.com/doi/pdf/10.1118/1.598470",
      "content-type": "unspecified",
      "content-version": "vor",
      "intended-application": "similarity-checking"
    }
  ],
  "deposited": {
    "date-parts": [
      [
        2023,
        9,
        16
      ]
    ],
    "date-time": "2023-09-16T08:22:22Z",
    "timestamp": 1694852542000
  },
  "score": 1,
  "resource": {
    "primary": {
      "URL": "https://aapm.onlinelibrary.wiley.com/doi/10.1118/1.598470"
    }
  },
  "subtitle": [],
  "short-title": [],
  "issued": {
    "date-parts": [
      [
        1999,
        1
      ]
    ]
  },
  "references-count": 24,
  "journal-issue": {
    "issue": "1",
    "published-print": {
      "date-parts": [
        [
          1999,
          1
        ]
      ]
    }
  },
  "alternative-id": [
    "10.1118/1.598470"
  ],
  "URL": "http://dx.doi.org/10.1118/1.598470",
  "relation": {},
  "ISSN": [
    "0094-2405",
    "2473-4209"
  ],
  "subject": [],
  "container-title-short": "Medical Physics",
  "published": {
    "date-parts": [
      [
        1999,
        1
      ]
    ]
  }
}