Low-dose CT chest scans could help detect pneumonia in at-risk patients while exposing them to only small amounts of radiation, a new study has found. The research, published in Radiology: Cardiothoracic Imaging, shows that ultra-low-dose scans can effectively detect pneumonia in patients with compromised immune systems, enabling doctors to treat the infection before it becomes life-threatening. According to the researchers, these scans expose patients to just 2% of the radiation dose used in a standard CT scan.

"This study paves the way for safer, AI-driven imaging that reduces radiation exposure while preserving diagnostic accuracy,” lead researcher Dr Maximiliano Klug, a radiologist with the Sheba Medical Center in Ramat Gan, Israel, said in a news release. He added that CT scans are the gold standard for detecting pneumonia but there are concerns regarding the risk posed by repeated exposure to radiation. There is a solution- ultra-low-dose CT scan. However, the problem is that these scans can be grainy and hard to read, researchers said.

Study Gives Solution To This

To overcome that, Klug's team developed an AI program that could help "de-noise" low-dose scans, making them sharper and easier to read. Between September 2020 and December 2022, 54 patients with compromised immune systems who had fevers underwent a pair of chest CT scans -- a normal dose scan and an ultra-low-dose scan. The AI program cleaned up the low-dose scan, and then both sets of images were given to a pair of radiologists for assessment. Radiologists had 100% accuracy in detecting pneumonia and other lung problems with the AI-cleaned low-dose scans, but 91% to 98% accuracy in examining the scans that hadn’t been improved through AI, results show.

"This pilot study identified infection with a fraction of the radiation dose," Klug said. "This approach could drive larger studies and ultimately reshape clinical guidelines, making denoised ultra-low dose CT the new standard for young immunocompromised patients.

How Can You Detect Pneumonia?

Pneumonia is a lung infection that causes the air sacs in the lungs to fill with fluid or pus and can be caused by bacteria, viruses, or fungi. The symptoms can range from milk to severe, which includes:

Coughing with or without cough

Fever

Chills

Trouble breathing

Chest pain, especially when breathing deeply or coughing

Sweating or chills

Rapid heart rate

Loss of appetite

Bluish skin, lips, and nails

Confusion.

How to detect Pneumonia in coughing newborns and toddlers?

Pneumonia can severely affect newborns and young children as their lungs are comparatively more sensitive. As per Dr Goyal, young children can cough for various reasons including seasonal infections and tonsillitis, which is very common in this age group. But if they look visibly irritable and have poor sleep patterns, then parents must reach out to an expert. "I am not saying that parents must visit a hospital but any local paediatrician would be able to detect pneumonia in your kid.

New Delhi: Harish Rana, India's first person to receive legal approval for passive euthanasia, passed away at AIIMS, New Delhi, on Tuesday evening, PTI reported. This comes after the Supreme Court allowed the withdrawal of the life-support system, thereby putting an end to an emotional chapter for the family. He had been in a vegetative state for over 13 years, with almost no hope of recovery. Doctors, after the Supreme Court's approval, removed the life-support tubes, thereby allowing him to die naturally. Passive euthanasia refers to withholding or withdrawing life-support treatment for a patient with little or no hope of recovery, allowing him or her to die naturally.

Read more: 'Sabko Maaf Karte Hue...Tum Jao': Emotional Farewell to Harish Rana After Supreme Court Allows ‘Right to Die with Dignity’

The apex court had granted permission for this on March 11 this year, thereby allowing the withdrawal of medical intervention under Article 21 to keep him alive. The Article gives the right to live with dignity. After the verdict, Rana was moved to AIIMS Delhi, where doctors followed a legally approved procedure to discontinue artificial life support.

Who is Harish Rana?

Harish Rana was a BTech student at Panjab University. In 2013, he reportedly fell from the fourth floor of a paying guest accommodation and suffered a traumatic brain injury. This left him 100% disabled and in a vegetative state. He required round-the-clock medical attention for survival and was being fed through a PEG (percutaneous endoscopic gastrostomy) tube. Doctors had been treating him for the past few years while maintaining that there were almost no chances of recovery.

A decade of suffering

For Harish Rana, the suffering last over a decade - 13 years of suffering silently. Hailing from Ghaziabad, for him it all began after a catastrophic fall from the fourth floor. Since then, he was in a coma unable to communicate or move apart from involuntary gulps and raqre flickering of his eyes. His parents approached the judiciary to put an end to the endless cycle of pain that their son could not even express. On March 11, the Supreme Court granted Rana hte right to 'die with dignity', thereby marking a first-ever case of passive euthanasia. The verdict allows doctors to remove support tubes that keep a patient in a vegetative state. On March 16, at AIIMS, Rana received an emotional farewell and was removed from life support.

Harish Rana, the 32-year-old resident from Ghaziabad who had been in vegetative condition for the last 13 years is now waiting for his last few moments. A landmark judgment allowed for passive euthanasia in Rana's case. This means without any active intervention, he will be able to exercise his right to die with dignity. As a result he has been taken off ventilator and other life support systems and shifted to a normal bed. His water tube was removed along with a cap being placed on his feeding tube. Health and Me had previously reported on how AIIMS Delhi has prepared to conduct India's first passive euthanasia.

Also Read: Harish Rana, India’s First Passive Euthanasia Case, Dies at AIIMS

However, it has been over a week since Rana's food and water supply has been cut off. Reports note that he, along with his parents are facing anxiety after he has been denied food and water for over a week.

On March 23, it marks 10 days since Rana has been shifted to AIIMS. Doctors note that every minute Rana spends in AIIMS is crucial for him, and special care is being taken to ensure he does not suffer during this time. His condition is being monitored and doctors are still administering medications to soothe his brain.

A Landmark Judgment For India's Long Debate In Euthanasia

Manish Jain, who represented Rana in Supreme Court and played a key role in securing legal aid for him told NDTV that when the verdict was being announced the entire court was packed. "From the courtroom to the gallery, there was a crowd everywhere, everyone was eagerly waiting to see what the Supreme Court would decide. Both judges became emotional while delivering the verdict; the expression was clearly visible on their faces... I was very disappointed myself. But the family felt that if the verdict came in their favor, it would be a great relief for the patient."

He told the media outlet that when the verdict was being announced the entire court went silent for 10 to 15 minutes and everyone was emotional.

Before the verdict was delivered, both judges met with Harish's family and obtained information from the doctor about every aspect of the case.

Jain describes the verdict saying: "I lost even after winning". He said he had seen Harish himself a several times and knew that he was going through a lot of pain. "13 years is no small thing," he notes. "The way his parents and family cared for him is beyond words. But now the only solace is that the court also understood the situation and gave a verdict that will set an example in the history of the country's judiciary."

What Happened To Harish Rana?

It was in 2013 when he suffered severe head injuries after he fell from the fourth floor from his PG accommodation while he was studying at Panjab University. He had been bedridden ever since, and survived on feeding tube. His father filed a petition seeking passive euthanasia under the guidelines Supreme Court had laid down in 2018 under Common Cause judgment. This is the second time the parents have approached the apex court.

In 2024, the court also suggested that Rana could receive home-based care with support from the Uttar Pradesh government. The home-based care includes periodic visits by doctors and physiotherapists. The court suggested that in case home care was not feasible, he could be moved to Noida's district hospital. However, his parents have noted that his condition continued to worsen. Family advocate Rashmi Nandakumar also informed the bench that "nothing seems to be working out".

"He is falling ill quite often and is repeatedly admitted to hospital," she said. The advocate further added that the family only sought passive euthanasia, which is withdrawal of treatment, and not any active intervention.

Justice Pardiwala also read medical reports and observed, "Just look at the condition of the boy. It's pathetic."

Recent court ruling on this case involves a bench comprising Justice JB Pardiwala and Justice KV Viswanathan that allowed the withdrawal of life support for Harish Rana, a resident of Ghaziabad, who has been in a coma and kept alive on tubes for breathing and nutrition after sustaining severe head injuries following a fall from a building in 2013 in Chandigarh.

Perez Hilton thanked doctors and nurses after his care at the Southern Hills Hospital in Las Vegas. He was hospitalized for 21 days after he experienced complications with the medicines he was taking for flu. In a video, he said, "My stupidity landed me in the hospital;". The celebrity blogger explained that he was taking medications on an empty stomach that led to serious health complications.

Also Read: Harish Rana Taken Off Food And Water Support For Over 10 Days; Waiting For Passive Euthanasia

What Happened To Perez Hilton?

He posted a video on March 23 on his YouTube channel and said, "It was the worst and best thing that's ever happened to me". The 48-year-old, whose real name is Mario Armando Lavandeira Jr, and goes by Perez Hilton said that he had flu for "about a week" and started to take his medications to get better.

However, the biggest mistake he did was taking those medications on an empty stomach. Though, he shares that he has never had food before any of his medications.

Turns out, the medications were hard on his stomach and intestines. After a week of taking the medications on an empty stomach, he developed an ulcer, a perforation and sepsis that led him to be admitted in a hospital with intense stomach pains.

“The first few days were a lot of pain and constant tests,” Perez recalled. “Because they couldn't find where the perforation was.” He added: “Eventually, after five days, I ended up having laparoscopic surgery. Surgery where they don’t cut you up, but they miraculously make these incisions.”

He aid that surgeons used cameras to "literally flip around all of my organs, trying to find the perforation first. Then after flipping around all of my organs, washing me our 'cause I had so much infection in there. So much infection". He also said that his lungs had to be drained out and that his body "kept falling apart". He was also put on heart medication because his "heart got out of control".

Also Read: World Tuberculosis Day 2026: Theme, Origin, And Significance

Due to his long hospital stay, he developed another infection and for two weeks he could not eat normal food. “It was such a slow process,” Perez shared. “Two weeks of just sickness and then another week of getting better before I was released. The last week was hell, because I had already been in the hospital two weeks by then.”

How Is Perez Hilton Now?

Perez is now at home and would continue to receive his medication intravenously through a PICC line in his arm for 10 days. He said it is more effective than oral medications. “When I saw my kiddos—who had visited me—but when we got home we had the biggest, most cathartic group hug. And tears and tears and tears. They were so worried for their dad," he said.

He also said that he learned from his experience of being hospitalized and hopes that his video works as a "cautionary tale" to those who are watching. He said, "I hope this video can be a cautionary tale to some of you. Take medication with food. That's very important. Take medication with food. Don't have it on an empty stomach. Don't end up like me in the hospital for 21 days.”