Computerized scheme for vertebra detection in CT scout image

2016 ◽  
Author(s):  
Wei Guo ◽  
Qiang Chen ◽  
Hanxun Zhou ◽  
Guodong Zhang ◽  
Lin Cong ◽  
...  
Keyword(s):  
Scout Image

Technical Note. Labral-ligamentous complex of the shoulder: Evaluation with double oblique axial MR arthrography

2003 ◽  
Vol 44 (4) ◽  
pp. 435-439
Author(s):  
T. Sasaki ◽  
Y. Saito ◽  
H. Yodono ◽  
G. L. M. Prado ◽  
H. Miura ◽  
...  
Keyword(s):  
Sensitivity And Specificity ◽  
Mr Arthrography ◽  
Technical Note ◽  
Glenoid Fossa ◽  
Glenohumeral Ligament ◽  
Inferior Glenohumeral Ligament ◽  
Scout Image ◽  
Weighted Sequences ◽  
Better Than

Purpose: To assess the ability of double oblique axial (DOA) MR arthrography in evaluating labral-ligamentous complex compared with conventional axial (CA) MR arthrography. Material and Methods: MR arthrography of 51 shoulders, subsequently examined with arthroscopy, were retrospectively reviewed. DOA imaging was performed in all 51 shoulders and both DOA and CA imaging in 37 using a 1.5 T unit with gradient recalled-echo T2*-weighted sequences. DOA imaging was performed using perpendicular planes to the long axis of the glenoid fossa obtained by an oblique sagittal scout image. We compared the ability of DOA with that of CA MR arthrography to assess labral injuries and to demonstrate the whole length of the anterior band of the inferior glenohumeral ligament (AIGHL), which were shown to be intact by arthroscopy. Results: For anterior labral injuries, sensitivity and specificity were 87% and 93% with CA, and 94% and 100% with DOA imaging, respectively. For posterior labral injuries, sensitivity and specificity were 47% and 100% with CA, and 79% and 96% with DOA imaging, respectively. There were no statistically significant differences between CA and DOA images, except for the ability to diagnose posterior labral injuries, where DOA imaging had a significant superior sensitivity ( p = 0.0327). DOA images also demonstrated the whole length of the intact AIGHL in 10 of 11 shoulders, while CA imaging showed this in only 3 of 11. Conclusion: DOA imaging was equal or better than CA imaging for evaluating the labral-ligamentous complex.

Evaluation of pediatric VCUG at an academic children’s hospital: is the radiographic scout image necessary?

2014 ◽  
Vol 45 (6) ◽  
pp. 855-861 ◽  
Author(s):  
Jason G. Domina ◽  
Ramon Sanchez ◽  
Indu R. Meesa ◽  
Emmanuel Christodoulou
Keyword(s):  
Children's Hospital ◽  
Children’S Hospital ◽  
Scout Image

Use of the Lateral Scout Image as an Adjunct to Computed Tomography-Guided Spinal Biopsy

Spine ◽  
1991 ◽  
Vol 16 (12) ◽  
pp. 1386-1387 ◽  
Author(s):  
ROBERT J. COOMBS ◽  
NABIL A. EBRAHEIM ◽  
W. T. JACKSON ◽  
Robert J. Coombs
Keyword(s):  
Computed Tomography ◽  
Scout Image ◽  
Spinal Biopsy

scholarly journals 469. Radiation planning with scout image in RT Marker system

1991 ◽  
Vol 47 (8) ◽  
pp. 1499
Author(s):  
Toshiharu Kusumoto ◽  
Noboru Matunaga ◽  
Tohru Murakami ◽  
Takahiro Kitayama ◽  
Michio Kono ◽  
...  
Keyword(s):  
Marker System ◽  
Scout Image ◽  
Radiation Planning

Computed Tomography Guidance for Percutaneous Glycerol Rhizotomy for Trigeminal Neuralgia

2019 ◽  
Vol 19 (2) ◽  
pp. E117-E121
Author(s):  
Bradley T Schmidt ◽  
Conrad D Pun ◽  
Wendell B Lake ◽  
Daniel K Resnick
Keyword(s):  
Computed Tomography ◽  
Trigeminal Neuralgia ◽  
Radiation Exposure ◽  
Skull Base ◽  
Ct Guidance ◽  
Foramen Ovale ◽  
Ct Scanner ◽  
Ct Guided ◽  
Needle Position ◽  
Scout Image

Abstract Background Percutaneous glycerol rhizotomy (PGR) is a well-described treatment for trigeminal neuralgia; however, the technique in using surface landmarks and fluoroscopy has not drastically changed since being first introduced. In this paper, we describe a protocol for PGR using computed tomography (CT) guidance based on an experience of over 7 yr and 200 patients. Objective To introduce an approach for PGR using CT guidance and, in doing so, demonstrate possible benefits over the traditional fluoroscopic technique. Methods Using a standard CT scanner, patients are placed supine with head in extension. Barium paste and a CT scout image are used to identify and plan a trajectory to the foramen ovale. A laser localization system built into the CT scanner helps to guide placement of the spinal needle into the foramen ovale. The needle position in the foramen is confirmed with a short-sequence CT scan. Results CT-guided PGR provides multiple benefits over standard fluoroscopy, including improved visualization of the skull base and significant reduction in radiation exposure to the surgeon and staff. Side benefits include improved procedure efficiency, definitive imaging evidence of correct needle placement, and potentially increased patient safety. We have had no significant complications in over 200 patients. CONCLUSION CT-guided PGR is a useful technique for treating trigeminal neuralgia based on better imaging of the skull base, better efficiency of the procedure, and elimination of radiation exposure for the surgeon and staff compared to traditional fluoroscopic based techniques.

Organ dose calculation in CT based on scout image data and automatic image registration

2012 ◽  
Vol 53 (8) ◽  
pp. 908-913 ◽  
Author(s):  
Mika Kortesniemi ◽  
Eero Salli ◽  
Raija Seuri
Keyword(s):  
Image Registration ◽  
Dose Calculation ◽  
Image Data ◽  
Organ Dose ◽  
Scout Image

scholarly journals The Effect of Medial Displacement Calcaneal Osteotomy on Tarsal Tunnel Volume

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0024
Author(s):  
Jae Young Kim ◽  
Dong-II Chun ◽  
Jaeho Cho ◽  
Young Yi
Keyword(s):  
Ct Scan ◽  
Medial Malleolus ◽  
Tarsal Tunnel ◽  
Slice Thickness ◽  
Cross Sectional ◽  
Volume Increase ◽  
Calcaneal Osteotomy ◽  
Scout Image ◽  
Tunnel Syndrome ◽  
The Mean

Category: Hindfoot Introduction/Purpose: Tarsal tunnel volume is affected by position of the foot and the alignment of the ankle. Although medial displacement calcaneal osteotomy (MDCO) significantly alters the alignment of the hindfoot, the change of tarsal tunnel volume after this procedure has not yet been well documented. Therefore, authors investigated the volumetric change of tarsal tunnel after MDCO using Computed Tomography (CT) scan. Methods: This retrospective study involved 101 feet of 91 patients who underwent a MDCO at our institution from March 2016 to December 2018. We compared the tarsal tunnel volume from the preoperative and postoperative CT scan images under following protocols. On a sagittal scout image, the oblique axial plane was drawn parallel to the long axis of the calcaneus using talonavicular joint as a landmark. Serial oblique axial images were displayed using PACS (PathSpeed, GE Healthcare, Chicago, IL, USA) with both the soft tissue and the bone window settings. The volume of tarsal tunnel was evaluated from just distal to the tip of medial malleolus anterior colliculus to distance of 3 cm distal using 10 consecutive images by drawing the border of tarsal tunnel. The volume was calculated by adding 10 cross-sectional areas and then multiplying by 3 mm corresponding to slice thickness. Results: The mean preoperative and postoperative tarsal tunnel volume were 12229 mm3 (SD, 1842 mm3) and 12762 mm3 (SD, 1803 mm3), respectively. There was 4.6% (SD, 3.4%) of volume increase after MDCO (p <0.001). Results indicated high inter- and intraobserver reliability coefficients (r = 0.97, r = 0.98, respectively). Conclusion: MDCO increased the volume of tarsal tunnel. This finding might support clinicians performing MDCO as a conjunctive surgical option in treating patients with tarsal tunnel syndrome.

scholarly journals SINGLE CERVICAL SPINE SCOUT IMAGE INCIDENTALLY REVEALS LUNG ADENOCARCINOMA

CHEST Journal ◽  
2020 ◽  
Vol 158 (4) ◽  
pp. A2529
Author(s):  
Alex Chen ◽  
Rohit Munagala ◽  
Atul Lodh ◽  
Kate Stanitski ◽  
Jayanth Keshavamurthy
Keyword(s):  
Cervical Spine ◽  
Lung Adenocarcinoma ◽  
Scout Image
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