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Computed Tomography News & Stories

Berthasaura leopoldinae: a window into Brazil's prehistoric past through computed tomography

 11/6/25
Dinosaurs evoke prehistoric times. They were fascinating creatures that ruled the world for over 200 million years. Now, they are represented by their descendants, the birds. Among the non-avian dinosaurs, a small-sized species named Berthasaura leopoldinae from 80–90 million years ago, was discovered in sedimentary rocks in Southern Brazil.
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An adult type of Bland-White-Garland syndrome

 28/5/25

A 47-year-old female patient, complaining of effort dyspnea, came to the hospital for a check-up. A performed echocardiography showed a slightly dilated left ventricle with a mid-range ejection fraction and systolic function. A cardiac CT angiography was performed on a photon-counting CT, NAEOTOM Alpha, to assess the coronary arteries.

Clinical Results
A cVRT image shows a posterior view of the three renal arteries, two on the left and one on the right, without signs of stenosis. An accessory artery, originating off the aorta on the right, between the CA and the SMA, is seen, departing upwards to the left hepatic lobe.

Bilateral congenital hydronephrosis associated with hypertension in an infant

 14/5/25

A 5-month-old baby, suffering from severe hypertension, was presented to the hospital. Ultrasound examination showed bilateral congenital hydronephrosis. A contrast CT scan was performed with a dual source photon-counting detector CT, NAEOTOM Alpha.Pro, to rule out renovascular etiology of the hypertension prior to pyeloplasty.

Clinical Results
A VRT image shows the origin, the course and the draining location of the portocaval shunt in three dimensions.

An extrahepatic portocaval shunt in a dog

 30/4/25

A 2-year-old dog was rescued after being abandoned at a lodge. An abdominal ultrasound examination suggested a possible portosystemic shunt. Surgery was attempted, however, failed to find the anomaly. An abdominal CTA was requested to identify the suspected anomalous vessel.

Clinical Results
A cinematic VRT image rendered with UHR images acquired on PCD CT, shows retained contrast agent near the neck of the aneurysm. The curved segment of the flow diverter appears slender. The structures of the diverter are shown in detail without interference of artifacts caused by the struts.

Follow up on an unruptured intracranial aneurysm treated with a flow diverter

 16/4/25

A 71-year-old female patient, complaining of dizziness for over two months, came to the hospital for a check-up. A native cerebral CT and a CT angiography (CTA) were performed on an energy-integrating detector (EID) CT for assessment.

Clinical Results
Two cVRT images show an overview of a d-TGA in three dimensions. Bilateral posterior pulmonary hypertension, causing a limited volume of the inflated lungs (in blue), is also seen. The bronchial tree appeared normal.

An infrarenal aortic occlusion in a young adult

 26/2/25
A 27-year-old female patient came to the hospital complaining of intermittent dizziness and headaches, worsened by exertion and relieved by rest, over the past month. She reported coldness and weakness in her lower limbs since childhood. A CT angiography was requested for a diagnostic work-up of the aorta to rule out a steno-occlusive disease.
Clinical Results
Two cVRT images show an overview of a d-TGA in three dimensions. Bilateral posterior pulmonary hypertension, causing a limited volume of the inflated lungs (in blue), is also seen. The bronchial tree appeared normal.

A Taussig-Bing anomaly in a neonate

 12/2/25

A full-term neonate was born with a suspicious congenital heart malformation. Prior to the planned surgical repair, a cardiac CT examination was requested to evaluate the heart anatomy, the great arteries and the coronary arteries.

Clinical Results
A cinematic VRT image rendered with UHR images shows a three-dimensional view of the coronary tree with the stents and the calcified plaques highlighted in blue.

Multiple coronary stents – in-stent restenosis?

 29/1/25
A 71-year-old male patient with a history of coronary stenting came to the hospital for a regular follow-up. Four stents had been implanted. A coronary CT angiography was performed with NAEOTOM Alpha®, using Quantum HD Cardiac mode, to assess the coronary stent patency and plaque burden.
Clinical Results
A cVRT image shows a splenomegaly and abdominal wall varices.

Tophaceous Gout of the Middle Ear

 15/1/25

A 75-year-old female patient was presented to the hospital due to an episode of instability. A routine examination revealed a progressive conductive hearing loss on the right side. An ultra-high resolution scan was performed using a dual source photon-counting detector CT, NAEOTOM Alpha®, to investigate the etiology of her hearing loss.

Clinical Results
A cVRT image shows a splenomegaly and abdominal wall varices.

A rare Budd-Chiari syndrome

 24/12/24

A 53-year-old female patient, complaining of abdominal wall varices, progressive abdominal tenderness and fatigue for the past two years, came to the hospital for a check-up. A triple-phase (arterial, portal-venous and delayed) contrast-enhanced abdominal CT examination was requested and performed for assessment.

Clinical Results
A curved MPR image show the SVG with a VEST device anastomosed to the PDA. The middle segment appears thin. Two severe stenoses are visualized in the distal segment.

Subclavian steal syndrome

 11/12/24

A 63-year-old male patient presented himself to the hospital, after a sudden onset of syncope, for a check-up. A Dual Energy CT angiography was performed on a Dual Source CT, SOMATOM Pro.Pulse, to rule out suspected bilateral carotid artery stenoses.

Clinical Results
A small lesion in the pancreatic body is seen in a cinematic VRT image created with UHR images.

Pancreatic insulinoma in a patient with a history of hypoglycemia

 27/11/24

A 63-year-old female patient, with a history of Hypoglycemia, had a calcium stimulation challenge test which showed diffuse insulin secretion throughout the pancreas, suspecting an insulinoma. However, a conventional CT examination did not reveal any pancreatic lesion. A contrast CT scan was performed with NAEOTOM Alpha for further evaluation.

Clinical Results
A curved MPR image show the SVG with a VEST device anastomosed to the PDA. The middle segment appears thin. Two severe stenoses are visualized in the distal segment.

Severe stenoses in a coronary saphenous vein graft with an external VEST support

 13/11/24

A 59-year-old male patient, with a history of triple CABG and coronary stenting, came to the hospital with non-specific symptoms. A CT scan with a dual source photon-counting detector CT, NAEOTOM Alpha®, was performed to evaluate the patency of the grafts, the anastomoses and the stent.

Clinical Results
A cinematic VRT image shows a three-dimensional view of the tumor located in the pancreatic body, showing no evidence of gastric wall invasion

A well-differentiated, invasive ductal adenocarcinoma in the pancreatic body

 30/10/24

A 69-year-old male patient, complaining of abdominal pain slowly progressing over the past 3 months, came to the hospital for a check-up. Ultrasound examination revealed a mixed solid and cystic mass in the pancreatic body, with suspicious invasion into the gastric wall. A CT examination was performed with a photon-counting CT, NAEOTOM Alpha®, for further assessment.

Clinical Results
Two corresponding curved MPR images, using standard and ZeeFree reconstruction, demonstrate a clear visualization of mild stenoses in the proximal LAD, caused by calcified plaques, after the ZeeFree correction. A non-calcified plaque in the mid LAD is also seen.

Multi-vessel coronary atherosclerosis – significant stenoses?

 16/10/24

A 78-year-old female diabetic patient, with clinical symptoms of a suspected stable angina, came to the hospital for a check-up. A coronary CT angiography was requested to evaluate the coronary arteries and to rule out coronary stenosis. A prospectively ECG-triggered sequential mode was performed with a dual source photon-counting detector CT, NAEOTOM Alpha®.

Clinical Results