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KUB X-ray - Significance and Test Procedures

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A kidney, ureter, and bladder X-ray is a radiographic examination used for assessing the urogenital and gastrointestinal systems. Read this article to know more.

Medically reviewed by

Dr. Manzoor Ahmad Parry

Published At October 19, 2022
Reviewed AtOctober 27, 2022

What Is a Kidney, Ureter, Bladder X-Ray?

KUB X-ray is a non-invasive radiographic examination that helps visualize urinary and gastrointestinal tract organs. It is performed to detect an intestinal obstruction, foreign matter, tumors, kidney stones, and gallstones. It may also provide information about the size, shape, and location of the kidneys, ureters, etc. This X-ray is recommended for people who complain of chronic or severe abdominal pain.

Why Is a KUB X-ray Done?

A KUB (Kidney, Ureter, Bladder X-ray) is recommended by the physicians to detect:

  • Kidney failure.

  • Abdominal pain due to gastro-related diseases.

  • Diagnosis of the presence of any foreign matter if accidentally swallowed.

  • Any changes in the kidneys, ureter, and bladder condition and size due to an infection or injury.

  • The physician may also recommend a KUB X-ray to check how the patient's system can manage urine flow and output quickly and effectively.

  • This test can cause a radiologist to detect problems within the urinary tract caused by enlarged prostate or tumors in the kidneys, ureter, or bladder.

How Is a KUB X-Ray Procedure Done?

Before the Procedure:

  • The procedure is explained in detail, and the specialist may provide you with the opportunity to ask any questions you may have.

  • Unlike other radiographic procedures requiring prior preparations, such as fasting or sedation, the KUB X-ray does not require any preliminary preparations.

  • Details on pregnancy or if you suspect pregnancy, then it is better to inform the specialist about it priorly.

  • If you have taken a bismuth-containing medication in the last four days, such as Pepto-Bismol, inform the specialist about it. Bismuth-containing medications may interfere with testing methods.

The Procedure:

KUB X-ray can be done in a hospital setting or during the stay in the hospital. Depending on the patient’s physical status and doctor’s plan, the procedure may vary. Generally, KUB X-ray follows this procedure:

  • Any items (clothing or jewelry) that interfere with the process of clothing need to be removed before the procedure.

  • If the patient is asked to undress, a dressing gown will be given.

  • The patient will be placed in a position to carefully place the abdominal X-ray between the X-ray machine and the cassette containing X-ray film or digital media.

  • Depending on the X-ray, the patient may be asked to stand upright, lie face down on the table, or lie sideways.

  • X-rays can be taken at more than one location.

  • Parts of the body at risk of getting exposed to X-rays may be covered with a pinafore of lead (shield) to avoid exposure to X-rays.

  • Once positioned, the radiologist will ask you to hold still for a few seconds while the X-ray is performed.

  • It is essential not to move completely during exposure, as any movement may distort the image and require further X-ray to obtain a clearer picture of the body part that has to be examined.

  • The X-ray will focus on the area to be photographed.

  • The radiologic specialist will step behind the protection window while taking the picture.

  • Although the X-ray procedure does not cause pain, the trauma to the examined part of the body may cause discomfort or pain, especially in the case of a recent injury or invasion procedure, such as surgery. The radiologic specialist will use all possible comfort options and complete the process as soon as possible to minimize any discomfort or pain.

After Procedure Care:

In most cases, no particular care is required after a KUB X-ray. However, depending on the specific case, the doctor may give additional or other instructions after the treatment.

How Do You Get an Image Through X-Ray?

X-ray is a type of radiation similar to light or radio waves. X-rays pass through many things, including different organs of the body. The specialist carefully aims for the X-ray in the area of ​​interest. The X-ray device sends radiation (a smaller amount) to the targeted body site. Radiation records an image in a photographic film. However, these X-rays are absorbed at varying levels in different body areas. The dense bone absorbs most of the rays, while the soft tissues (muscles, fat, and limbs) allow more X-rays to pass through them. Hence, calcified tissues such as bone appear light in color or white on the X-ray, and soft tissues appear in shades of gray and dark air.

Most X-ray images are digital files stored on a computer. The doctor can easily access these stored images to diagnose and manage your condition.

What Are the Benefits of KUB X-Ray?

  • X-ray imaging is a painless, slow procedure, usually with no complications.

  • Radiology tests can usually provide enough information to avoid invasive procedures to the maximum extent.

  • X-ray machines are inexpensive and are widely available in emergency rooms, doctor's offices, patient care centers, nursing homes, and other places. This makes it easier for both patients and doctors.

  • Because X-rays are fast and easy, they benefit from emergency diagnosis and treatment.

  • No radiation stays in your body after the X-ray examination using protective equipment.

  • X-rays usually have no adverse effects on the standard diagnostic stage of this trial.

What Are the Risks of KUB X-Ray?

  • Although KUB radiography is quick, invasive, and inexpensive, some risks are involved. The most critical risk factor is the risk of radiation exposure.

  • Excessive radiation exposure always carries a small risk of cancer. Given the modest quantity of radiation used in medical imaging, however, the advantage of a precise diagnosis far surpasses the risk.

How Do You Get the Findings of the X-Ray?

A radiologist is a doctor trained to evaluate and interpret radiology test information obtained through various diagnostic procedures. The physician receives the signed test report from the radiologist, and the physician will discuss and give the patient a clear idea of the results. X-ray results can be obtained immediately for review by the radiologist. Sometimes, the patient may need a follow-up test. If so, the doctor will explain why.

Follow-up After a KUB X-Ray:

Sometimes, a follow-up test evaluates a potential problem with additional viewing or a unique scanning process. It may also determine whether there has been a change in the condition over time. Follow-up tests are usually the best way to determine whether a treatment is working or the problem needs attention.

Conclusion:

The radiographic examination of kidneys, ureters, and bladder is a non-invasive technique. The doctor may decide on such methods based on the systemic conditions to assess urogenital and gastrointestinal disorders to be evaluated. In addition, these procedures are accessible, affordable, and provide results with high accuracy. For more information, consult doctors on incliniq.com.

Frequently Asked Questions

1.

What Can Be Seen on a KUB X-Ray?

A kidney, ureter, and bladder (KUB) X-ray is an imaging test done to evaluate the urinary system for any abnormalities or medical conditions. It provides integral information about the size, shape, and position of the urinary tract organs, mainly the kidneys, ureters, and urinary bladder. In addition, it helps identify tumors, stones, and the causes of urinary tract obstructions.

2.

Can a Patient Drink Water Before Undergoing KUB X-Ray?

 
The patient does not have to make any special preparation before undergoing a KUB X-ray. No fasting or sedation is required to be done before the procedure. Hence, the patient can drink water before the procedure. However, females must inform the doctor if they are pregnant to avoid complications.

3.

Are There Any Differences Between the KUB and Abdominal X-Rays?

In simple terms, KUB is a diagnostic procedure that provides images of the organs present in the lower abdominal tract, including kidneys, ureters, and bladder. In contrast, an abdominal X-ray aims to produce images of the abdominal structures, including the stomach, intestines, and spleen.

4.

How Is the KUB X-Ray Procedure Carried Out?

 
A KUB X-ray is a simple and non-invasive procedure that is usually done at imaging centers. First, the patient is asked to lie on his back on the X-ray table. Next, an X-ray machine is positioned over his abdomen. Next, the patient is asked to lie still and avoid movement. Finally, the machine captures the images, which the doctor analyzes later.

5.

What Is the Duration of the KUB X-Ray Procedure?

 
A KUB usually gets completed within 15 to 20 minutes. The patient is at the least risk after the procedure because the radiation exposure time is less than a second. Hence, the procedure is devoid of any complications.

6.

Is It Necessary to Have a Full Bladder Before the KUB X-Ray Procedure?

 
Doctors commonly recommend KUB to diagnose urologic problems. Although it is a non-invasive procedure, the doctor might provide some instructions before the procedure. For example, the patient must have a full bladder before undergoing an X-ray. This implies that the patient needs to drink plenty of water and should not empty his bladder before the procedure.

7.

Can a KUB Be Used to Diagnose Constipation?

 
As the name suggests, kidney, ureter, and bladder (KUB) X-ray aims to diagnose lower abdominal tract anomalies. However, this procedure is greatly helpful in diagnosing other gastrointestinal conditions like gallstones and bowel obstruction. In addition, it can also detect the presence of kidney stones and stools. Hence, it helps rule out constipation.

8.

Will a Patient Have Pain During KUB?

 
A KUB is a painless procedure because only the X-rays are taken. Therefore, it does not involve any surgery. However, a patient who has undergone any invasive surgery or has met with an accident might feel pain or discomfort.

9.

How Should the Patient Prepare for the KUB X-Ray Procedure?

The patient needs to keep the following things in mind before the procedure:
-Discuss with the doctor and understand the procedure thoroughly.
-No fasting or sedation is to be done before the procedure.
-Females must inform the doctor if they are pregnant or planning to conceive.
-Inform the doctor in case the medications containing bismuth have been taken previously.

10.

How Can a KUB X-Ray Assess the Gastrointestinal Tract?

A KUB X-ray is typically used to assess the lower gastrointestinal tract, including the kidneys, ureters, and urinary bladder. It uses high-intensity electromagnetic beams to produce images of tissues, bones, and internal organs.
Dr. Manzoor Ahmad Parry
Dr. Manzoor Ahmad Parry

Nephrology

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