Detailed distribution of acute pulmonary thromboemboli: Direct evidence for reduction of acquisition length and radiation dose for triple rule-out CT angiography
| Autor: | Koichiro Tatsumi, Susumu Hoshino, Hiroyuki Takaoka, Takayuki Kuriyama, Naoko Kawata, Shinichi Toyama, Issei Komuro, Yukiko Matsuura, Hidefumi Shimizu, Masae Uehara, Miyako Saito, Nobuhiro Tanabe, Toshihiko Sugiura, Nobusada Funabashi, Jun Ikari |
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| Rok vydání: | 2011 |
| Předmět: |
Adult
Male Aortic arch Chest Pain Pulmonary Circulation medicine.medical_specialty Right middle lobe medicine.medical_treatment Population Aorta Thoracic Radiation Dosage medicine.artery medicine Humans education Reduction (orthopedic surgery) Aged Retrospective Studies education.field_of_study Lung medicine.diagnostic_test business.industry Triple rule out Radiation dose Angiography Middle Aged medicine.anatomical_structure Acute Disease Female Radiology Pulmonary Embolism Tomography X-Ray Computed Cardiology and Cardiovascular Medicine business Nuclear medicine |
| Zdroj: | International Journal of Cardiology. 147:234-238 |
| ISSN: | 0167-5273 |
| DOI: | 10.1016/j.ijcard.2009.08.040 |
| Popis: | Purpose To reduce the redundant acquisition range and total radiation dose for planning appropriate "triple rule-out" CT angiography (CTA) for acute chest pain, we evaluated the detailed distribution of pulmonary thromboemboli (PTE) in subjects with acute PTE. Materials and methods Retrospective review of CTA n 75-subjects (48-females; 57±16years) with proven acute PTE was performed to determine whether PTE was present solely above the aortic arch or below the heart. Results 77% had PTE in the right upper lobe but none had PTE that were solely located higher than the aortic arch; 73% had PTE in the right middle lobe; 80% had PTE in the right lower lobe, but none had PTE that were solely located lower than the heart. 81% had PTE in the left upper lobe and 3% of them had PTE solely located higher than the aortic arch; both had PTE in the right upper, middle, and lower, and the left lower lobes. 75% had PTE in the left lower lobe, but none had PTE that were solely located lower than the heart. The acquisition length in limited CTPA in this population was reduced on average by 21.9% compared with full CTPA. Conclusions In subjects with acute PTE, there were none whose PTE was located solely in the upper lobes which were higher than the aortic arch, nor solely in the lower lobes which were lower than the heart. A limited range triple rule-out CTA protocol would decrease effective doses approximately 22% relative to full chest CTA and may help the physician find all PE present. |
| Databáze: | OpenAIRE |
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