In urology, tomography is an advanced imaging method that provides detailed evaluation of the urinary tract and related organs. Computed tomography (CT) provides high accuracy in the diagnosis of diseases occurring in the kidneys, ureters, bladder, prostate and surrounding tissues by imaging the body in thin sections.
CT is frequently used in the diagnosis of conditions such as kidney stones, tumors, urinary tract obstruction, infection and trauma. CT scans, both non-contrast and contrast material injection, show the location, size and spread of urological diseases in detail. In this way, it provides important information to the physician in surgical or medical treatment planning.
The most commonly used types of tomography in urology include CT urography (medicated kidney–urinary tract CT), low-dose CT (for kidney stones), and dynamic pelvic CT . These methods are preferred in the diagnosis of conditions such as stone diseases, masses, anatomical disorders and cancer staging.
The biggest advantage of CT is that it gives fast results and provides high-resolution images. However, since it contains radiation, unnecessary repetition should be avoided and used with caution, especially in children and pregnant women.
Computed tomography (CT) plays an important role in the diagnosis, staging and treatment planning of many diseases in urology. The urinary tract and organs of the reproductive system can be viewed in detail. CT’s fast, clear, and three-dimensional imaging provides a great advantage, especially in emergencies and evaluation of suspicious lesions.
Here are the situations where tomography is commonly used in urology:
Kidney Stones (Urolithiasis)
- It is one of the most frequently used areas.
- The size, location and density of the stone can be determined.
- Thanks to low-dose CT, less radiation is given to the patient.
Kidney Tumors
- The size, shape and spread of the masses to the surrounding tissues are evaluated.
- Staging and planning are done before treatment.
Bladder and Prostate Diseases
- Wall thickenings, masses and tumors seen in the bladder can be visualized.
- The size of the prostate gland and its relationship with surrounding structures can be examined.
Urinary Tract Obstructions
- Strictures, stones or tumor-related obstructions in the ureter or bladder outlet can be detected.
Congenital Structural Disorders
- Anomalies such as horseshoe kidney, double collecting system, ureteropelvic junction stenosis are evaluated.
Urinary Tract Infections and Abscesses
- In complicated urinary infections (e.g. pyelonephritis, perinenephritis), abscess, edema or inflammatory spread in the kidneys are investigated.
Traumas
- In the case of kidney, bladder, or ureter injuries, the presence of tissue damage and bleeding is assessed.
Cancer Staging and Metastasis Research
- The spread of urological cancers (especially kidney, bladder, testicle, prostate) and lymph node metastases are examined.
Preoperative Planning
- Detailed anatomical information is obtained, especially before stone surgery, tumor removal or reconstructive procedures.
In conclusion, tomography plays a critical role in both diagnosing and creating an effective treatment plan by providing rapid and detailed examination of the urological system.
What are the types of CT used in urology?
CT (computed tomography) techniques used in urology vary according to the type of disease, the nature of the complaints and the details of the organ to be imaged. Some types of CT are optimized for stone diagnosis, while others are used for tumor screening or detailed anatomical evaluation.
Here are the most commonly used types of CTs in urology:
Low Dose CT (Low-Dose CT)
- It is widely used in stone disease.
- The radiation dose is low; It is especially preferred in recurrent stone complaints.
- It is applied without medication, gives fast results
Contrast-enhanced CT (Medicated CT)
- Vascular structures, tumors and foci of infection are displayed more clearly.
- Usually, intravenous iodinated contrast agent is used.
- It is preferred for kidney tumors, apexia, prostate and bladder cancers .
CT Urography (CT Urography)
- It is a detailed type of CT in which the kidneys, ureters and bladder are visualized together.
- By administering contrast material to the system, the entire urinary tract can be evaluated.
- It is used in urinary tract obstructions, tumors, congenital anomalies and recurrent infections.
Spiral (Helical) CT
- The device takes images as it spirals around the patient.
- It provides rapid screening and is especially preferred in emergencies such as trauma and suspected stone passing .
- It is advantageous to scan a large area in a short time.
Dynamic Pelvic CT
- It is a technique in which the pelvic organs (especially the bladder and prostate) are visualized in different phases.
- It is used in cases such as prostate cancer staging and lymph node involvement
CT Angiography (CTA)
- It provides detailed examination of the vascular structures of the kidney and urological organs.
- It is used for renal vascular anomalies, tumor-vascular relationship or bleeding .
Virtual CT Cystoscopy
- It allows the inner surface of the bladder to be evaluated with a 3D image.
- It can be an alternative to invasive cystoscopy, especially used in tumor monitoring.
Each type of CT is specifically selected for different clinical conditions. The physician determines the appropriate method according to the patient’s needs.
What are the advantages of using tomography in urology?
Computed tomography (CT) is an indispensable imaging method in the diagnosis, staging and treatment planning of urological diseases. Thanks to its advanced technology, the urinary tract and surrounding structures can be examined in detail. This makes it possible to make an accurate and rapid diagnosis.
- High Image Quality and Detailed Anatomical Examination
- Providing Rapid Diagnosis
- High Sensitivity for Stone and Tumor Detection
- Guides Pre-Surgical Planning
- Effective in Identifying Structural Anomalies
- 3D Imaging Opportunity
- Wide Usage Area
- More Reliable Results Compared to Alternative Methods
The use of CT in urology offers numerous advantages in terms of accurate diagnosis, early intervention, effective treatment planning , and reducing the risk of complications .
Frequently asked questions about tomography in urology
Is tomography necessary for urological diseases?
No. It is not necessary for every patient. However, in cases such as kidney stones, tumors, infections or trauma, CT is very valuable in diagnosis and treatment planning.
Is pain felt during tomography?
No. Tomography is painless. The patient should only stand still for a few minutes.
Is the use of contrast media mandatory?
No. In stone diseases, CT without contrast (without medication) is usually sufficient. However, contrast material can be used in cases where vascular structures, tumors or infection sites need to be seen more clearly.
How long does a tomography take?
The shooting usually takes 5–10 minutes . If it is to be done with contrast, the time may be a little longer.
Is tomography harmful?
CT devices use ionizing radiation, so unnecessary re-shots should be avoided and should not be performed without the recommendation of the physician. Low-dose techniques reduce the radiation effect.
Is special preparation required for CT scanning?
No preparation is usually required for non-contrast CT. However, preliminary preparations such as fasting and checking kidney function may be required in contrast-enhanced CT.
Can pregnant women have a tomography?
Not recommended unless necessary. When necessary, it can be done with the decision of the doctor, by taking protective measures to the abdominal area. Ultrasound or MRI is usually preferred.
When will the tomography result come out?
Post-shooting images are taken within a few minutes. With the evaluation of the radiologist, the results are usually communicated to the physician on the same day or the next day .
Are kidney stones seen on CT?
Yes. CT is the imaging method that shows kidney stones most clearly. The location, size and density of the stone are determined correctly.
Which urological organs can be imaged with CT?
With CT , the kidneys, ureters, bladder, prostate, surrounding tissues and vascular structures can be visualized in detail.