Abstract:
PURPOSE:The purpose of the study was to explore the feasibility and repeatability of diffusion tensor imaging and diffusion tractography on the anterior cruciate ligament graft after reconstruction and determine the fractional anisotropy and mean apparent diffusion coefficient values. MATERIALS AND METHODS:Twenty-two patients who underwent anterior cruciate ligament reconstruction operation were scanned at 3-T clinical magnetic resonance scanner. The fiber tracking and other postprocessing steps were carried out twice by a radiologist on the workstation and repeated by another radiologist. Diffusion tensor metrics of different parts of the grafts were determined with region of interest- and fiber tractography-based measurements, and the intraobserver and interobserver measurement variances were calculated. RESULTS:Tractography illustrated nicely the 3-dimensional courses of the graft in all 22 cases. The mean fractional anisotropy value of the intratunnel part was significantly higher than that of the intra-articular part, whereas the mean apparent diffusion coefficient value of the intratunnel part was lower when compared with that of the intra-articular part. According to the 2-sided paired samples Student t test, the intraobserver and interobserver measurements correlated well. CONCLUSIONS:Diffusion tensor imaging and diffusion tractography can be used to visualize the anterior cruciate ligament grafts and can provide additional information over standard morphologic magnetic resonance imaging.
journal_name
J Comput Assist Tomogrjournal_title
Journal of computer assisted tomographyauthors
Yang X,Chen D,Li M,Shi D,Zhu B,Jiang Qdoi
10.1097/RCT.0000000000000198subject
Has Abstractpub_date
2015-03-01 00:00:00pages
244-9issue
2eissn
0363-8715issn
1532-3145journal_volume
39pub_type
杂志文章abstract::Multiple authors have pointed out the difficulty of detecting spondylolysis with lumbar CT. A simple method to detect spondylolysis on lumbar CT is described. Identifying one intact cortical ring for each vertebra absolutely excludes the diagnosis obviating the time-consuming need to search each image looking for posi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:
更新日期:1985-07-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the Macklin effect in patients with spontaneous pneumomediastinum by multidetector-row computed tomography (MDCT). METHODS:Chest computed tomography (CT) reports between July 2000 and January 2003 at our institution were retrospectively reviewed. Nine patients with s...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000187416.07698.8d
更新日期:2006-01-01 00:00:00
abstract::Fallopian tube carcinoma is an unusual gynecologic malignancy that is rarely diagnosed preoperatively. We report a case of fallopian tube carcinoma occurring in a patient who had undergone a hysterectomy many years previously, in whom findings on computed tomography and ultrasound were highly suggestive of the diagnos...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章,评审
doi:10.1097/00004728-200305000-00011
更新日期:2003-05-01 00:00:00
abstract::This is a comparison of the ability of two quantitative magnetic resonance (MR) indices: (a) the second echo signal drop (SESD) (a simplified index of T2 relaxation times that we have developed); and (b) the previously described lesion/liver signal intensity ratio (LLR) to provide histologic diagnosis in hepatic lesio...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:
更新日期:1990-03-01 00:00:00
abstract:PURPOSE:Our purpose was to determine what represents normal findings on MR examinations of the lumbar spine in the immediately postoperative period following lumbar laminectomy with retained Surgicel. METHOD:MR examinations were performed immediately following lumbar laminectomy in 10 patients referred for symptoms of...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199911000-00029
更新日期:1999-11-01 00:00:00
abstract::An increase in the effective atomic number of blood is among the factors allowing or influencing the visualization of the major cerebral vessels on noncontrast CT. Bromine (atomic number, 50) attenuates 70 keV X-rays significantly and was responsible for a striking enhancement of the major cerebral vessels on the nonc...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198410000-00035
更新日期:1984-10-01 00:00:00
abstract::We present the case of unilateral nonhemorrhagic adrenal infarct in a 29-week pregnant 21-year-old woman. The patient presented with right upper quadrant pain, nausea, and vomiting. Ultrasonography of the right upper quadrant and appendix was negative for pathology. Magnetic resonance imaging of the abdomen demonstrat...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000887
更新日期:2019-11-01 00:00:00
abstract::We present a case of a child with acute bacterial leptomeningeal infection caused by Streptococcus pneumoniae. There was an extension of infection along multiple Virchow-Robin spaces into the brain parenchyma, resulting in multiple microabscesses. These abscesses showed restricted diffusion on the diffusion-weighted i...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318187ff15
更新日期:2009-07-01 00:00:00
abstract::The primitive trigeminal artery is the most common of the persistent carotid-basilar anastomoses with an angiographic incidence of 0.6%. Fifteen cases of aneurysms of a persistent primitive trigeminal artery have been reported in the literature. A 16th patient is presented in whom an incidental trigeminal artery aneur...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章,评审
doi:10.1097/00004728-198809010-00022
更新日期:1988-09-01 00:00:00
abstract::The use of CT in the documentation of ancient Egyptian mummified human remains has previously been described in this and other journals. We recently applied this technique to a collection of ancient Egyptian mummified fauna and sarcophagi. We selected an example to illustrate that CT is also uniquely suitable for the ...
journal_title:Journal of computer assisted tomography
pub_type: 历史文章,杂志文章
doi:10.1097/00004728-198707000-00044
更新日期:1987-07-01 00:00:00
abstract::We describe the case of a 50-year-old man with history of remote splenectomy who underwent routine lung cancer screening chest computed tomography and was incidentally found to have a liver lesion. Dedicated liver protocol computed tomography demonstrated "archiform" enhancement pattern in the arterial phase and homog...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000762
更新日期:2018-09-01 00:00:00
abstract::Bullous lung disease is known to be a risk factor for developing a bronchogenic carcinoma. In this article, computed tomography appearances of 20 patients with histologically proven bronchogenic carcinoma were reviewed retrospectively. On the basis of the previous literatures and our findings, the computed tomography ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200605000-00016
更新日期:2006-05-01 00:00:00
abstract::We report imaging findings of renal matrix stones in a patient with congenital ureteropelvic junction obstruction associated with urinary tract infection. The stones were composed of a calcified center and a non-calcified peripheral matrix that was slightly high attenuated on CT and nonshadowing on US. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199605000-00015
更新日期:1996-05-01 00:00:00
abstract::To achieve prolonged breath-holding, oxygen was administered just before dynamic CT and high resolution lung CT. Oxygen administration has proved to be a supportive means to improve the quality of CT studies. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198707000-00043
更新日期:1987-07-01 00:00:00
abstract::A new head holder for the fixation and repositioning of the patient head in PET, CT, and MR scanners has been designed and tested. With this device, a bidimensional correlation between functional and anatomical brain images can also be obtained. Head fixation and repositioning are achieved using the patient's dental m...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199109000-00034
更新日期:1991-09-01 00:00:00
abstract:OBJECTIVE:To evaluate stent-induced artifacts by 64-row multidetector computed tomography (MDCT). METHODS:We studied 26 stented patients with MDCT before conventional coronary angiography (CCA). The CT values were measured. Stents were classified as occluded, with significant stenosis, with nonsignificant stenosis, or...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181ddbbc0
更新日期:2010-11-01 00:00:00
abstract:OBJECTIVE:To identify the computed tomography (CT) findings to predict recurrent bleeding in patients with massive hemoptysis. METHODS:Fifty-eight patients with massive hemoptysis underwent both CT and conventional bronchial angiography for bronchial artery embolization. Retrospective analysis was done to analyze the ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200607000-00018
更新日期:2006-07-01 00:00:00
abstract:PURPOSE:The purpose of this study was to assess the accuracy of magnetic resonance imaging (MRI), particularly, dynamic MRI, in distinguishing ovarian fibromas from subserous uterine leiomyomas. MATERIAL AND METHODS:Fifteen ovarian fibromas and 15 subserous uterine leiomyomas were retrospectively reviewed. All MR exam...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000237810.88251.9e
更新日期:2007-03-01 00:00:00
abstract:PURPOSE:Our goal was to determine the number of malignancies detected by thoracic CT in patients with head and neck squamous cell carcinoma (SCCA) in three clinical settings. METHOD:We retrospectively examined 168 thorax CT scans in 93 patients with head and neck SCCA and determined the number of malignancies (second ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199705000-00014
更新日期:1997-05-01 00:00:00
abstract::We studied the high resolution CT (HRCT) scans of 15 patients with biopsy-proven sarcoidosis and correlated the findings with pulmonary function tests (12 patients), 67Ga scans (10 patients), bronchoalveolar lavage (five patients), recent transbronchial biopsy (six patients), and recent open lung biopsy (three patient...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198905000-00006
更新日期:1989-05-01 00:00:00
abstract::The density distribution inside a pathologic zone before and after contrast enhancement has been studied in the computed tomograms of 88 cases of cerebral and orbital tumors, using histographic analysis. The histograms provided additional diagnostic information, especially for vascular tumors. This method is also usef...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-197704000-00014
更新日期:1977-04-01 00:00:00
abstract::A magnetic resonance imaging technique is discussed which, by cyclic inversion of the longitudinal magnetization, produces boli of moving material with alternating sign of the magnetization. At periodic spacings along the flow direction, the signal strength from magnetization of positive sign is equal to that of negat...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198801000-00024
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVE:To investigate the diagnostic efficacy of sequentially acquired gadobenete dimeglumine-enhanced 3-dimensional dynamic magnetic resonance imaging (MRI) and Resovist-enhanced MRI for detecting hepatocellular carcinoma (HCC) by comparing with combined computed tomography (CT) hepatic arteriography (CTHA) and CT ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e31802d0b6b
更新日期:2007-09-01 00:00:00
abstract:OBJECTIVE:The objective of the study was to characterize the enhancement pattern of hyperfunctioning parathyroid adenomas on multiphase multidetector computed tomography (CT) or 4-dimensional CT. METHODS:We retrospectively studied the enhancement patterns of 48 pathologically confirmed parathyroid adenomas with 4-dime...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e31822a1e70
更新日期:2011-09-01 00:00:00
abstract::The CT and magnetic resonance appearance of prominent nabothian cysts is presented. Although small nabothian cysts are common gynecologic findings, they at times reach 2-4 cm in diameter and may simulate a cystic adnexal mass. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198711000-00040
更新日期:1987-11-01 00:00:00
abstract::In a case of cerebral infarction the lesions were isointense to slightly hyperintense in the T2-weighted MR images obtained approximately 2 weeks after the onset. Earlier (1 week after onset), they had been markedly hyperintense. The probably mechanisms behind this phenomenon, referred to as "MR fogging" are discussed...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199101000-00029
更新日期:1991-01-01 00:00:00
abstract:PURPOSE:To date, there have been no systematic reports examining cerebral lymphomas with perfusion-sensitive MRI. We sought to determine the characteristics of perfusion-sensitive MRI of these tumors. METHOD:Five primary and three secondary cerebral lymphomas were analyzed. None of the patients had a history of AIDS. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199903000-00011
更新日期:1999-03-01 00:00:00
abstract::Computed tomography (CT) has been performed in 21 patients with primary hyperparathyroidism (HPT) in an attempt to localize preoperatively the parathyroid tumors. Eighteen of these patients also had ultrasound examinations. The CT examinations included the neck and mediastinum and were performed before and after contr...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198206000-00016
更新日期:1982-06-01 00:00:00
abstract::The magnetic resonance imaging (MRI) findings in 2 cases of ovarian cancer arising in an endometrioma are presented. In both cases, the cancer was evident as an enhancing mass within a blood-filled adnexal cyst. The MRI findings of an enhancing mass within a blood-filled adnexal cyst should prompt consideration of ova...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200411000-00018
更新日期:2004-11-01 00:00:00
abstract::The CT appearance of hemiazygos continuation of a left-sided inferior vena cava is presented along with discussion of associated anomalies. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198803000-00027
更新日期:1988-03-01 00:00:00