Evaluation in the Use of Bismuth Shielding on Cervical CT Scan Using a Female Phantom

The Computed Tomography (CT) has become an important tool to diagnose cancer and to obtain additional information for different clinical questions. Today, it is a very fast, painless and noninvasive test that can be performed high quality images. However, CT scan usually requires a higher radiation exposure dose than a conventional radiography examination. The aim of this study is to determine the dose variation deposited in thyroid and in nearby radiosensitive organs, such as: lenses, pharynx, hypophysis, salivary gland and spinal cord with and without the use of bismuth shielded. A cervical CT scan was performed on anthropomorphic male phantom model Alderson Rando, using a GE scanner, Discovery model with 64 channels. Dose measurements have been performed by using radiochromic film strips to register the individual doses in the organs of interest. The results show us that the thyroid received the highest dose, 24.70 mGy, in the phantom, according to the incidence of the primary X-ray beam.

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Radiation Exposure Evaluation of Visual Organs using Bismuth Shielding Material on Head CT Scan

The Journal of the Korea Contents Association ◽

10.5392/jkca.2016.16.07.451 ◽

2016 ◽

Vol 16 (7) ◽

pp. 451-456

Author(s):

Se-Sik Kang ◽

Changsoo Kim ◽

Jung-Hoon Kim

Keyword(s):

Ct Scan ◽

Radiation Exposure ◽

Head Ct ◽

Bismuth Shielding ◽

Exposure Evaluation ◽

Shielding Material

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Pulmonary atelectasis during paediatric anaesthesia: CT scan evaluation and effect of positive endexpiratory pressure (PEEP)

Pediatric Anesthesia ◽

10.1046/j.1460-9584.1999.00340.x ◽

1999 ◽

Vol 9 (3) ◽

pp. 225-228 ◽

Cited By ~ 6

Author(s):

G Serafini ◽

G Cornara ◽

F Cavalloro ◽

A Mori ◽

R Dore ◽

...

Keyword(s):

Ct Scan ◽

Paediatric Anaesthesia ◽

Pulmonary Atelectasis ◽

Positive Endexpiratory Pressure

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1596: Lymph Node Staging in Prostate Cancer by the use of 11C-CHOLIN-PET/CT Scan Imaging

The Journal of Urology ◽

10.1016/s0022-5347(18)35718-5 ◽

2005 ◽

Vol 173 (4S) ◽

pp. 432-432

Author(s):

Georg C. Bartsch ◽

Norbert Blumstein ◽

Ludwig J. Rinnab ◽

Richard E. Hautmann ◽

Peter M. Messer ◽

...

Keyword(s):

Prostate Cancer ◽

Lymph Node ◽

Ct Scan ◽

Lymph Node Staging ◽

Pet Ct ◽

Pet Ct Scan

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Synchronous celiac axis and superior mesenteric artery embolism

VASA ◽

10.1024/0301-1526/a000154 ◽

2011 ◽

Vol 40 (6) ◽

pp. 495-498 ◽

Cited By ~ 1

Author(s):

Rajkovic ◽

Zelic ◽

Papes ◽

Cizmek ◽

Arslani

Keyword(s):

Atrial Fibrillation ◽

Small Intestine ◽

Abdominal Pain ◽

Ct Scan ◽

Superior Mesenteric Artery ◽

Mesenteric Artery ◽

Abdominal Cavity ◽

Celiac Axis ◽

Contrast Administration ◽

Artery Embolism

We present a case of combined celiac axis and superior mesenteric artery embolism in a 70-year-old patient that was examined in emergency department for atrial fibrillation and diffuse abdominal pain. Standard abdominal x-ray showed air in the portal vein. CT scan with contrast showed air in the lumen of the stomach and small intestine, bowel distension with wall thickening, and a free gallstone in the abdominal cavity. Massive embolism of both celiac axis and superior mesenteric artery was seen after contrast administration. On laparotomy, complete necrosis of the liver, spleen, stomach and small intestine was found. Gallbladder was gangrenous and perforated, and the gallstone had migrated into the abdominal cavity. We found free air that crackled on palpation of the veins of the gastric surface. The patients condition was incurable and she died of multiple organ failure a few hours after surgery. Acute visceral thromboembolism should always be excluded first if a combination of atrial fibrillation and abdominal pain exists. Determining the serum levels of d-dimers and lactate, combined with CT scan with contrast administration can, in most cases, confirm the diagnosis and lead to faster surgical intervention. It is crucial to act early on clinical suspicion and not to wait for the development of hard evidence.

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Successful Endovascular Repair of a Leaking Abdominal Aortic Aneurysm under Local Anesthesia

Swiss Surgery ◽

10.1024/1023-9332.7.2.86 ◽

2001 ◽

Vol 7 (2) ◽

pp. 86-89 ◽

Cited By ~ 17

Author(s):

Lachat ◽

Pfammatter ◽

Bernard ◽

Jaggy ◽

Vogt ◽

...

Keyword(s):

Abdominal Aortic Aneurysm ◽

Aortic Aneurysm ◽

Ct Scan ◽

Local Anesthesia ◽

Endovascular Repair ◽

Anesthetic Management ◽

High Risk Patient ◽

Invasive Technique ◽

Chronic Obstructive ◽

Abdominal Aortic

Local anesthesia is a safe and less invasive anesthetic management for the endovascular approach to elective aortic aneurysm. We have successfully extended the indication of local anesthesia to a high-risk patient with leaking aneurysm and stable hemodynamics. Patient and methods: A 86 year old patient with renal insufficiency due to longstanding hypertension, coronary artery and chronic obstructive lung disease was transferred to our hospital with a leaking abdominal aortic aneurysm. Stable hemodynamics allowed to perform a fast CT scan, that confirmed the feasibility of endovascular repair. A bifurcated endograft (24mm x 12mm x 153mm) was implanted under local anesthesia. Results: The procedure was completed within 85 minutes without problems. The complete sealing of the aneurysm was confirmed by CT scan on the third postoperative day. Twenty months later, the patient is doing well and radiological control confirmed complete exclusion of the aneurysm. Discussion: The endoluminal treatment is a minimally invasive technique. It's feasibility can be rapidly assessed by CT scan. The transfemoral implantation can be performed under local anesthesia provided that hemodynamics are stable. This anesthetic management seems to be particularly advantageous for leaking abdominal aortic aneurysm since it doesn't change the hemodynamic situation in contrast to general anesthesia. Hemodynamic instability, abdominal distension or tenderness may indicate intraperitoneal rupture and conversion to open graft repair should be performed without delay.

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