Precise Biopsy Localization by Computed Tomography

Haaga, John R.; Alfidi, Ralph J.

doi:10.1148/118.3.603

Cited by 291 publications

(105 citation statements)

References 5 publications

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“…Similar results observed by Saha et al 3 and Basnet et al Pneumothorax is the most frequent complication of the procedure which was 7.8 % which is little high compared to Gupta et al (1%), Shrestha MK et al (2%), Basnet et al (4%), Sarker et al 13%. In most instances the patient can be discharged after a check x-ray and few hours of Observation.…”

Section: Discussionsupporting

confidence: 83%

“…Since that time CT guided FNAC is considered procedure of choice in the evaluation of focal chest lesions where ultrasound guided procedure is not possible. 3 Ultrasound guided FNAC has been used as a diagnostic procedure of peripheral lung mass but deep intrathoracic masses cannot be imaged by ultrasonography. 4 Though FNA can be done for the lung lesion by different radiological procedures like fluoroscopy, USG or CT guidance, CT guided FNA had become popular due to early localization of needle.…”

Section: Introductionmentioning

confidence: 99%

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Computed tomogram guided fine needle aspiration for lung masses: Radiologic-cytologic correlation

et al. 2017

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The primary objective was to compare the results of computed tomography (CT) finding with that of cytology. The secondary objective was to evaluate the safety of CT guided transthoracic Fine Needle Aspiration Cytolofy (FNAC) of lung lesions of various sizes and locations. From December 2014 to June 2016, under CT guidance, FNAC of lung lesion was performed on 64 cases attending KIST medical college and Kathmandu imaging diagnostic center. FNAC was performed by using spinal anesthesia needle (22G/23G). Procedures were carried out under CT guidance. Smears were prepared by materials obtained and were fixed in 95% alcohol. Dry as well as wet slides were prepared. The prepared slides were then examined under light microscope by consultant pathologist. Sixty four patients were enrolled in present study. The age of patients ranges from 24 to 87 year with mean age of 55.5 and male to female ratio of 2:1. Radiologically, out of 64 cases, 49 cases were reported as malignant and 15 cases were reported as benign lesion. However, Cytologically, 39 cases were malignant, 22 cases were benign and 3 cases were suspicious for malignancy (no definite diagnosis established). The CT scan showed Sensitivity of 97.4% to identify the malignant mass as compared to cytology findings. the Specificity, Positive and negative predictive value were calculated as 63.6%, 82.6 and 93.3% respectively. CT guided fine needle aspiration cytology (FNAC) is reliable procedure for evaluation of lung lesion. It is simple and safe procedure with high diagnostic accuracy for the diagnosis of Lung cancer. Compared to biopsy, CT guided FNAC shortens the diagnostic interval and helps in differentiating lung malignancy into different cytopathological types which aids in proper management of the malignant lesion.

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Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Computed tomogram guided fine needle aspiration for lung masses: Radiologic-cytologic correlation

et al. 2017

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“…Computed tomography (CT) has been used to guide interventional procedures of the chest and abdomen for nearly two decades (1,2). CT-guided procedures have continued to increase in number (3) and are less invasive than many surgical options.…”

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confidence: 99%

CT Fluoroscopy Shielding: Decreases in Scattered Radiation for the Patient and Operator

Neeman

Dromi

Sarin

et al. 2006

Journal of Vascular and Interventional Radiology

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PURPOSE-High-radiation exposure occurs during computed tomographic (CT) fluoroscopy. Patient and operator doses during thoracic and abdominal interventional procedures were studied in the present experiment, and a novel shielding device to reduce exposure to the patient and operator was evaluated. MATERIALS AND METHODS-With a 16-slice CT scanner in CT fluoroscopy mode (120 kVp, 30 mA), surface dosimetry was performed on adult and pediatric phantoms. The shielding was composed of tungsten antimony in the form of a lightweight polymer sheet. Doses to the patient were measured with and without shielding for thoracic and abdominal procedures. Doses to the operator were recorded with and without phantom, gantry, and table shielding in place. Double-layer leadfree gloves were used by the operator during the procedures.RESULTS-Tungsten antimony shielding adjacent to the scan plane resulted in a maximum dose reduction of 92.3% to the patient. Maximum 85.6%, 93.3%, and 85.1% dose reductions were observed for the operator's torso, gonads, and hands, respectively. The use of double-layer lead-free gloves resulted in a maximum radiation dose reduction of 97%.CONCLUSIONS-Methods to reduce exposure during CT fluoroscopy are effective and should be searched for. Significant reduction in radiation doses to the patient and operator can be accomplished with tungsten antimony shielding.Computed tomography (CT) has been used to guide interventional procedures of the chest and abdomen for nearly two decades (1,2). CT-guided procedures have continued to increase in number (3) and are less invasive than many surgical options. Despite advances in other areas of imaging, CT has remained the imaging study of choice for many procedures because of its inherently superior contrast and spatial resolution in comparison with conventional fluoroscopy and ultra-sonography (US). However, unlike other imaging modalities, conventional CT lacks real-time imaging capabilities. Therefore, CT-guided procedures generally take longer because the region of interest must be intermittently scanned to confirm safe adjustment and placement of the needle or catheter.CT fluoroscopy is a technique that has been developed in the past decade (4). In this acquisition mode, CT images are reconstructed and displayed nearly in real time. This provides the interventionalist with immediate feedback during the procedure. CT fluoroscopy has been shown to reduce procedure time (5) and increase efficacy compared with standard CT guidance (6).The inherent drawback of CT fluoroscopy is rather high radiation exposure to the patient and operator, which may explain why CT fluoroscopy has not been more broadly accepted (7). Radiation exposure for the patient is primarily along the scan plane. Because the exposure along the scan plane is cumulative, deterministic effects can be significant (8,9). Scattered radiation from the direct beam and collimator leakage also contribute to the patient dose (10).For the operator, exposure is primarily a function of scattered radiation ...

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“…Это позволило снизить вероятность повреждения круп-ных сосудов и расположенных рядом органов [10,12]. В 1976 г. J. Haaga и R. Alfidi впервые провели прицельную пункционную биопсию очагового поражения печени под контролем компьютерной томографии [13]. Пункция по Menghini при эхографическом ассистировании впервые проведена L. Greiner и F. Franken в 1983 г. и до настоя-щего времени считается методом выбора при получении биопсийного материала [14].…”

Section: история развития методов биопсии печениunclassified

Modern Possibilities of Endosurgical Biopsy in Children with Chronic Liver Diseases

et al. 2018

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Precise Biopsy Localization by Computed Tomography

Cited by 291 publications

References 5 publications

Computed tomogram guided fine needle aspiration for lung masses: Radiologic-cytologic correlation

Computed tomogram guided fine needle aspiration for lung masses: Radiologic-cytologic correlation

CT Fluoroscopy Shielding: Decreases in Scattered Radiation for the Patient and Operator

Modern Possibilities of Endosurgical Biopsy in Children with Chronic Liver Diseases

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